Question

2. What is the number of proper subsets of a given
finite set with n elements?
(a) 2n - 1 (b) 2n - 2 (c) 2 - 1
(d) 2" - 2​

Answer 1

If a set contains 'n' elements, then the number of proper subsets of the set is 2n - 1. In general, number of proper subsets of a given set = 2m - 1, where m is the number of elements.